We're a little OCD so we time it each time. 7 minutes to 9 minutes depending on wait for traffic lights. We start time from the lobby and stop time at security walkthrough (and the reverse on our way back to the hotel). Doesn't make a difference whether we go on the DL side or the hotel side, but DL side feels faster because there are fewer people to trample

This is with 2 small kids; 1 in a stroller usually.